/*
 *
 * Paros and its related class files.
 * 
 * Paros is an HTTP/HTTPS proxy for assessing web application security.
 * Copyright (C) 2005 Chinotec Technologies Company
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the Clarified Artistic License
 * as published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * Clarified Artistic License for more details.
 * 
 * You should have received a copy of the Clarified Artistic License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package org.parosproxy.paros.extension.history;

import java.awt.Component;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;

import javax.swing.JFileChooser;
import javax.swing.JList;
import javax.swing.JOptionPane;

import org.parosproxy.paros.extension.ExtensionPopupMenu;
import org.parosproxy.paros.model.HistoryReference;
import org.parosproxy.paros.network.HttpMessage;

/**
 * 
 * To change the template for this generated type comment go to Window -
 * Preferences - Java - Code Generation - Code and Comments
 */
public class PopupMenuExportResponse extends ExtensionPopupMenu {

	private static final long serialVersionUID = -1127184069859891894L;
	
	private ExtensionHistory extension = null;

	/**
     * 
     */
	public PopupMenuExportResponse() {
		super();
		initialize();
	}

	/**
	 * @param label
	 */
	public PopupMenuExportResponse(String label) {
		super(label);
	}

	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	private void initialize() {
		this.setText("Export Response to File...");

		this.addActionListener(new java.awt.event.ActionListener() {

			public void actionPerformed(java.awt.event.ActionEvent e) {

				JList listLog = extension.getLogPanel().getListLog();
				Object[] obj = listLog.getSelectedValues();
				if (obj.length == 0) {
					extension
							.getView()
							.showWarningDialog(
									"Select HTTP message in History panel before export to file.");
					return;
				}

				if (obj.length > 1) {
					extension.getView().showWarningDialog(
							"Only one response can be exported at a time.");
					return;
				}

				HistoryReference ref = (HistoryReference) obj[0];
				HttpMessage msg = null;
				try {
					msg = ref.getHttpMessage();
				} catch (Exception e1) {
					extension.getView().showWarningDialog(
							"Error reading response.");
					return;
				}

				if (msg.getResponseHeader().isEmpty()
						|| msg.getResponseBody().length() == 0) {
					extension.getView().showWarningDialog(
							"Empty body.  File not created.");
					return;
				}

				File file = getOutputFile(msg);
				if (file == null) {
					return;
				}

				boolean isAppend = true;
				if (file.exists()) {
					int rc = extension.getView().showYesNoCancelDialog(
							"File exists.  Yes = overwrite, No = append?");
					if (rc == JOptionPane.CANCEL_OPTION) {
						return;
					} else if (rc == JOptionPane.YES_OPTION) {
						isAppend = false;
					}
				}

				BufferedOutputStream bos = null;
				try {
					bos = new BufferedOutputStream(new FileOutputStream(file,
							isAppend));
					for (int i = 0; i < obj.length; i++) {
						exportHistory(msg, bos);
					}

				} catch (Exception e1) {
					extension.getView().showWarningDialog(
							"Error saving file to " + file.getAbsolutePath()
									+ ".");
				} finally {
					try {
						bos.close();
					} catch (Exception e2) {
					}
				}
			}
		});

	}

	public boolean isEnableForComponent(Component invoker) {

		if (invoker.getName() != null && invoker.getName().equals("ListLog")) {
			try {
				JList list = (JList) invoker;
				if (list.getSelectedIndex() >= 0) {
					this.setEnabled(true);
				} else {
					this.setEnabled(false);
				}
			} catch (Exception e) {
			}
			return true;

		}
		return false;
	}

	void setExtension(ExtensionHistory extension) {
		this.extension = extension;
	}

	private void exportHistory(HttpMessage msg, BufferedOutputStream bos) {

		try {
			if (!msg.getResponseHeader().isEmpty()) {

				bos.write(msg.getResponseBody().getBytes());
			}

		} catch (Exception e) {
		}

	}

	private File getOutputFile(HttpMessage msg) {

		String filename = "";
		try {
			filename = msg.getRequestHeader().getURI().getPath();
			int pos = filename.lastIndexOf("/");
			filename = filename.substring(pos);
		} catch (Exception e) {
		}
		JFileChooser chooser = new JFileChooser(extension.getModel()
				.getOptionsParam().getUserDirectory());
		if (filename.length() > 0) {
			chooser.setSelectedFile(new File(filename));
		}

		File file = null;
		int rc = chooser.showSaveDialog(extension.getView().getMainFrame());
		if (rc == JFileChooser.APPROVE_OPTION) {
			file = chooser.getSelectedFile();
			if (file == null) {
				return file;
			}

			extension.getModel().getOptionsParam().setUserDirectory(
					chooser.getCurrentDirectory());

			return file;

		}
		return file;
	}

}
